What is gene expression, Biology

Assignment Help:

What is Gene Expression ?

Gene expression is the process by which a gene is activated to produce a certain protein. Cells are able to respond to changes in the environment in two ways: 1.) by controlling the production of enzyme molecules that cause expression of a gene; and 2.) by controlling the activities of enzymes that are already present through the use of feedback mechanisms.

The control mechanism for gene expression is very different in prokaryotic cells than in eukaryotes.
The way in which a specific gene expresses itself is of particular interest to scientists. Many diseases have been found to be genetically-based. Therefore, the ability to control the form and behavior of a cell or an organism would prove especially useful in the prevention and cure of disease.

One area that holds real promise in the near future is in the cloning of new tissues or organs to replace those that have become injured or diseased. Cells from the body can be used to produce clones because each cell contains a full complement of DNA. Cloning involves removal of a cell from an organism, and then providing that cell with all of the nutrients, gases, and physical conditions necessary for its growth, development, and reproduction.

The larger question is: since each and every cell has the same DNA information, what are the determining factors that cause a newly formed skin cell to form the specialized structures that enable it to perform the functions of skin, rather than, say, the types of protein structures that characterize muscle cells?

 


Related Discussions:- What is gene expression

Explain the structure of fungi, Explain the Structure of Fungi? The veg...

Explain the Structure of Fungi? The vegetative structure of a fungus is called thallus. It varies in complexity and size, ranging from unicellular yeasts to multicellular mould

Maedi/visna, Maedi/visna Maedi, a progressive pneumonia, and visna, a n...

Maedi/visna Maedi, a progressive pneumonia, and visna, a neurotropic disease, found in sheep and goats are caused by the Maedi/visna virus, belonging to the family Retroviridae

How do chordates reproduce, Q. How do chordates reproduce? Reproduction...

Q. How do chordates reproduce? Reproduction in beings of the phylum Chordata is sexual, with the exception of urochordates that can be also reproduce asexually. In some classes

Explain about the dietary reference intakes, Explain about the Dietary Refe...

Explain about the Dietary Reference Intakes? Dietary Reference Intakes (DRIs) are relatively new to the field of nutrition. The DRIs are a set of four nutrient-based reference

What do you meant by medical writing, Question 1 : What do you meant by ...

Question 1 : What do you meant by medical writing? Show various types of medical writing. Define and explain briefly medical writing Discuss various types of medical w

Respiration of seeds, How can i design an experiment to compare the heat ou...

How can i design an experiment to compare the heat output by two different types of germinating seeds?

Explain spread plate method - pure culture techniques?, Explain Spread Plat...

Explain Spread Plate Method - Pure Culture Techniques? In this method, diluted microbial suspension containing about 30 to 300 colonies is spread uniformly on the agar surface

Principles of numerical taxonomy, Q. Principles of Numerical Taxonomy? ...

Q. Principles of Numerical Taxonomy? Numerical taxonomy is based on the following 7 principles. 1) The greater the content of information in the taxa of a classification is an

Explain the primary root growth, Explain the Primary Root Growth? Prim...

Explain the Primary Root Growth? Primary Growth in Roots :  Roots grow down and through the soil by adding new cells at the tip of the root (called the root tip). There is a

Explain about the cardiovascular and circulatory system, Explain about the ...

Explain about the Cardiovascular and Circulatory System? Aging affects the cardiac muscle causing a diminished resting cardiac output. The capacity of myocardium for cellula

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd